CA1196433A - Circuit actif d'alimentation de ligne assiste par transformateur d'impedance avec filtrage de supervision - Google Patents

Circuit actif d'alimentation de ligne assiste par transformateur d'impedance avec filtrage de supervision

Info

Publication number
CA1196433A
CA1196433A CA000434913A CA434913A CA1196433A CA 1196433 A CA1196433 A CA 1196433A CA 000434913 A CA000434913 A CA 000434913A CA 434913 A CA434913 A CA 434913A CA 1196433 A CA1196433 A CA 1196433A
Authority
CA
Canada
Prior art keywords
ring
tip
signal
amplifier
resistor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000434913A
Other languages
English (en)
Inventor
Stanley D. Rosenbaum
Zdenek J. Holy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to CA000434913A priority Critical patent/CA1196433A/fr
Priority to AT85303095T priority patent/ATE47266T1/de
Priority to EP85303095A priority patent/EP0199865B1/fr
Priority to DE8585303095T priority patent/DE3573699D1/de
Application granted granted Critical
Publication of CA1196433A publication Critical patent/CA1196433A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/005—Feeding arrangements without the use of line transformers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/026—Arrangements for interrupting the ringing current
CA000434913A 1983-08-18 1983-08-18 Circuit actif d'alimentation de ligne assiste par transformateur d'impedance avec filtrage de supervision Expired CA1196433A (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA000434913A CA1196433A (fr) 1983-08-18 1983-08-18 Circuit actif d'alimentation de ligne assiste par transformateur d'impedance avec filtrage de supervision
AT85303095T ATE47266T1 (de) 1983-08-18 1985-05-01 Uebertragungsunterstuetzte leitungsspeiseschaltung ativer impedanz mit filterfunktion fuer ueberwachungssignale.
EP85303095A EP0199865B1 (fr) 1983-08-18 1985-05-01 Circuit d'alimentation de ligne à impédance active assisté par un transformateur avec la fonction de filtrage des signaux de supervision
DE8585303095T DE3573699D1 (en) 1983-08-18 1985-05-01 Active impedance transformer-assisted line feed circuit with filtering function of supervision signals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000434913A CA1196433A (fr) 1983-08-18 1983-08-18 Circuit actif d'alimentation de ligne assiste par transformateur d'impedance avec filtrage de supervision
EP85303095A EP0199865B1 (fr) 1983-08-18 1985-05-01 Circuit d'alimentation de ligne à impédance active assisté par un transformateur avec la fonction de filtrage des signaux de supervision

Publications (1)

Publication Number Publication Date
CA1196433A true CA1196433A (fr) 1985-11-05

Family

ID=39591845

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000434913A Expired CA1196433A (fr) 1983-08-18 1983-08-18 Circuit actif d'alimentation de ligne assiste par transformateur d'impedance avec filtrage de supervision

Country Status (4)

Country Link
EP (1) EP0199865B1 (fr)
AT (1) ATE47266T1 (fr)
CA (1) CA1196433A (fr)
DE (1) DE3573699D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993021722A1 (fr) * 1992-04-16 1993-10-28 Northern Telecom Limited Circuit d'interface de ligne telephonique a large bande

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2324181A1 (fr) * 1975-09-12 1977-04-08 Lannionnais Electronique Dispositif de detection de boucle d'une ligne d'abonne
CA1178386A (fr) * 1982-06-07 1984-11-20 Stanley D. Rosenbaum Circuit d'alimentation assiste par transformateur pour ligne a impedance active

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993021722A1 (fr) * 1992-04-16 1993-10-28 Northern Telecom Limited Circuit d'interface de ligne telephonique a large bande

Also Published As

Publication number Publication date
DE3573699D1 (en) 1989-11-16
ATE47266T1 (de) 1989-10-15
EP0199865A1 (fr) 1986-11-05
EP0199865B1 (fr) 1989-10-11

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry